Bundling strap dispenser

Abstract: A bundling strap dispenser includes a housing. A trigger (30) is pivotally received in the housing and is manually operable from outside. A cutting means (50) with a cutting blade (51) is pivotally received in the housing and actuatable by the trigger. A retaining member (70,72,73) is mounted on the cutting means (50) to pivot therewith for retaining a bundling strap (101) when the bundling strap is being cut. A rib (21) extends horizontally in the upper section of the housing and defines an opening (22) through which the retaining element (73) is insertable. A stepped plate (80) is mounted above the rib to define a passage therebetween for the bundling strap. The stepped plate further includes a trough (83) for receiving a buckle (100) therein for engaging with the bundling strap. The trough defines a slot (82) in alignment with the opening (61) of the buckle reloader (60), and defines in a bottom side thereof a second slot (84) through which the blade (51) is insertable to cut the bundling strap after the bundling strap is retained. A feeding device (92,93) is mounted above the rib for feeding a new buckle after a previous buckle is used and removed.

Description: This invention relates to a dispenser for bundling strap. Straps are usually utilized to bundle articles, in which two ends of a strap are generally securely held in a buckle. Currently available straps are in a certain length and this often results in a waste of the straps when they are used to bundle small articles. In addition, as the buckle is integral with the strap, there is also a waste of the former as the former is also abandoned when the latter is destroyed for accessing the bundled articles. This invention provides a bundling strap dispenser to mitigate and/or obviate the above-mentioned problems. This invention provides a bundling strap dispenser comprising a housing, a trigger which is pivotally mounted in the housing and is manually operable from outside, a linking plate which is substantially U-shaped in a cross-sectional view and can be pivoted and actuated by the trigger and a cutting means including a first end, a second end and a blade. The blade is attached to the first end of the cutting means. The second end of the cutting means is pivotally mounted above the linking plate. Thus, the cutting means can be actuated by the linking plate by depressing the trigger. The dispenser further has a buckle reloader securely attached to the cutting means. The buckle reloader defines an opening through which a bundling strap passes, and includes a pair of reloading lugs. A resilient member, which is linked to the second end of the cutting means to pivot therewith, includes a retaining element with a toothed end for retaining the bundling strap when cutting the bundling strap and a returning member for returning the resilient member, the blade, and the linking plate back to their original positions before re-triggering. A rib extends horizontally in the upper section of the housing, and defines a second opening through which the toothed end of the retaining element can be passed. A stepped plate is mounted above the rib, and defines a passage therebetween for the bundling strap. The stepped plate further includes a buckle-receiving trough with a slot to communicate the passage with the opening of the buckle reloader and a second slot in a bottom side thereof through which the blade is insertable to cut the bundling strap after an article is firmly bundled. A rod is mounted above the rib and carries a plurality of buckles along a longitudinal axis thereof. The rod is attached to a block with a third opening in alignment with the passage for the bundling strap. A spring is mounted around the rod and an urging block is attached to an end of the spring for feeding the buckles. By such an arrangement, an actuation of the trigger urges the toothed end of the retaining member to pass through the opening in the rib to retain the bundling strap, and a further actuation of the trigger urges the blade to cut the bundling strap. The lugs carry a new buckle fed by the urging block after an old buckle is used and removed. IN THE DRAWINGS: FIG. 1 is a perspective view of a bundling strap dispenser in accordance with this invention; FIG. 2 is an exploded view of the bundling strap dispenser; and FIGS. 3 through 7 are cross-sectional views showing the operation of the bundling strap dispenser. Referring to the drawings and initially to FIGS. 1-3, a bundling strap dispenser in accordance with this invention generally has a contour of a gun and includes a housing comprised of first and second half housing sections 10 and 20. A trigger 30 is pivotally mounted about a pin 31 in the housing and is manually operable from outside. A spring 33 is provided to return the trigger 30 after it is released. A linking plate 40 is substantially U-shaped in a cross-sectional view. The linking plate 40 is pivoted to the housing by a pin 42 which is inserted through a mediate section of the linking plate 40, with a substantially hooked first end 41 thereof engaging with a peg 32 on the trigger 30 and thus being actuatable by the trigger 30 to pivot about the pin 42. A cutting means 50 is substantially U-shaped in a cross-sectional view. The cutting means 50 includes a first end and a second end. A blade 51 is attached to the first end of the cutting means 50. A pin 52 (see FIG. 3) is inserted through a passage (not numbered) which is defined through the second end of the cutting means 50. The pin 52 is mounted on the first and second half housing sections 10 and 20. Thus, the cutting means 50 can be pivoted about the pin 52. The cutting means 50 is mounted above the linking plate 40. A substantially L-shaped buckle reloader 60 is attached to the first end of the blade 50 by a screw 63 and includes an opening 61 through which the bundling strap 101 passes and a pair of reloading lugs 62 for carrying a new buckle 100 after the removal of a previous one, which will be discussed in detail later. A resilient member 70 is mounted to pin 52 of the cutting means 50 to pivot therewith and includes a retaining element 72 with a toothed end 73 for retaining a bundling strap 101 when cutting the bundling strap 101 by means of the blade 51. The resilient member 70 further includes a returning member 71 for returning itself as well as the blade 51 and the linking plate 40 back to their original positions before re-triggering. A rib 21 extends horizontally in the upper section of the housing section 20 and defines an opening 22 through which the toothed end 73 of the retaining element 72 can be inserted. A stepped plate 80 is mounted above the rib 21 and also extends horizontally. The stepped plate 80, together with the rib 21, defines a passage for the bundling strap 101. The stepped plate includes two ribs formed thereon so that a slot 81 is defined between the ribs of the stepped plate. A plurality of buckles 100 can be received in the slot 81. The stepped plate 80 further includes a trough 83 with a slot 82 to communicate the passage with the opening 61 of the buckle reloader 60 and a second slot 84 in a bottom side thereof through which the blade 51 is insertable to cut the bundling strap 101 after the article is firmly bundled. A plurality of buckles 100 may be strung along a rod 91 which is attached to a block 90 with an opening 94 in alignment with the passage for the bundling strap 101. A spring 93 is mounted around the rod 91 and an urging block 92 is attached to an end of the spring 93 for feeding the buckles 100. As shown in FIG. 3, the buckles 100 are strung on the rod 91 and each has upper and lower single direction toothed structures 103 and 104 and sufficient clearance to receive and securely "catch" the bundling strap 101. The bundling strap 101 has a plurality of corresponding recesses 102 (see FIG. 3) in one side thereof to receive the single direction toothed structures 103, 104. Referring now to FIGS. 3 through 7, when bundling is required, the bundling strap 101 is passed from the opening 94 in the block 90 at the rear end of the gun-shaped dispenser, through the passage defined by the rib 21 and the stepped plate 80 and further through the slot 82 in the stepped plate 80 and the opening 61 in the buckle reloader 60, as shown in FIG. 3. The lower single direction toothed structure 104 allows the strap 101 to slide leftward yet forbids the strap 101 to slide rightward. The user then, after surrounding the article 105 to be bundled by the front free end of the bundling strap 101, inserts the front free end of the bundling strap 101 into the opening 61 to securely engage with the upper single direction toothed structure 103, as shown in FIG. 4. The upper single direction toothed structure 103 allows the strap 101 to slide rightward yet forbids the strap 101 to slide leftward, thus preventing the bundling strap 101 from being loosened. Thereafter, as indicated by the arrow in FIG. 5, the user pulls the strap 101 rearward (i.e., rightward as seen from FIG. 5) to ensure that the article is firmly bundled. The user then depresses the trigger 30, thereafter, due to the pivotal movement of the linking member 40 about pin 42 responsive to the pivotal movement of the trigger 30 about pin 31, the retaining means 70 pivots upward about pin 52 such that the toothed end 73 thereof passes through the opening 22 in the rib 21 to retain the bundling strap 101, while the blade 51 also moves upward to pass through slot 84 in the trough 83 of the stepped plate 80 and thus approaches the bundling strap 101. After that, the user further triggers the trigger 30 to cause further upward movement of the blade 51 to cut the bundling strap 101, as shown in FIG. 6. After the cutting, the bundled article 105 as well as the buckle 100 fall due to the weight of the bundled article 105, i.e., the buckle 100 is removed from the dispenser. At this moment, the lugs 62 are above the passage for reloading of the buckle heads 100, a new buckle 100 is urged leftward by the spring force of spring 93 to a place below the lugs 62 (see FIG. 7). Then, the user may release the trigger 30, the lugs 62 of the reloader 60 carry the new buckle 100 downward into the trough 83 in the stepped plate 80. All elements are returned to their original positions by spring 33 and element 71. For subsequent operation, the user may urge the remaining bundling strap 100 leftward to engage with the lower toothed structure of the new buckle 100, the above-mentioned procedure is repeated. According to the above description, this invention has the following advantages: (1) the bundling strap 101 can be manufactured to be relatively long and can be economically used for bundling; (2) the buckles 100, when used with this dispenser, may be repeatedly used; and (3) the time for bundling articles can be reduced. Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.

Claims: A bundling strap dispenser comprising: a housing (10, 20); a trigger (30) which is pivotally received in the housing and is manually operable from outside; a cutting means (50) which includes a blade (51) and is pivoted in the housing and is actuatable by the trigger; a retaining member (70) which is mounted to the cutting means to pivot therewith for retaining a bundling strap (101) when cutting the bundling strap; a rib (21) extending in the upper section of the housing and defining an opening through which the retaining member is insertable; a stepped plate (80) which is mounted above the rib (21) and defines a passage therebetween for the bundling strap (101), the stepped plate further including a trough (83) in which a buckle (100) for engaging with the bundling strap is received, the trough defining a slot (82) in alignment with the passage, the trough (83) further defining in a bottom side thereof a second slot (84) through which the blade (51) is insertable to cut the bundling strap after the bundling strap is retained; and a feeding means (90) which is mounted above the rib (21) for feeding a new buckle (100) after the buckle in the trough is used and removed. The bundling strap dispenser as claimed in claim 1 further comprising a means (33) for returning the trigger (30) when the trigger is released. The bundling strap dispenser as claimed in claim 1 wherein the buckling member (100) has upper and lower single direction toothed structures (103, 104) and the bundling strap (101) defines a plurality of recesses in one side thereof to receive the single direction toothed structures. The bundling strap dispenser as claimed in claim 1 wherein the feeding means includes: a rod (91) being adapted to carry a plurality of buckles (100) along a longitudinal axis thereof, the rod being attached to a block with a third opening in alignment with the passage for the bundling strap, a spring (93) being mounted around the rod and an urging block (92) being attached to an end of the spring for feeding the buckles; and a buckle reloader (60) which is securely attached to the first end of the blade, and defines an opening through which the bundling strap (101) passes, and includes a reloading element for carrying the new buckle into the trough (83) of the stepped plate (80). The bundling strap dispenser as claimed in claim 1 wherein the retaining member (70) has a toothed end (73) which passes through the opening (22) in the rib (21) upon actuation of the trigger to retain the bundling strap when cutting the bundling strap. The bundling strap dispenser as claimed in claim 1 wherein a linking plate (40) is pivoted to the housing and is actuatable by the trigger (30), and the cutting means (50) is pivotally mounted above the linking plate and is actuatable by the linking plate (40) upon a triggering of the trigger.

Inventors: CHANG KUN SHENG, CHANG, KUN SHENG
Applicants: CHANG KUN SHENG, CHANG, KUN SHENG
Application year: 1994
Main classification: B65B13
IPC codes: B65B13